hearings about the n.i.a.'s role in fending off an attack on the u.s. consulate in benghazi, libya, which left the a.s. ambassador and two c.i.a. contractors dead. petraeus met his wife holly when he was a cadet at west point. she's a top appointee at the new consumer protection financial bureau. petraeus often describes her as "bright, nice, and a pit bull. someone you want in your yorner." the deputy director of the c.i.a., michael morell has been described as acting director, white house officials describe him as a total pro, an all star who advised the president on his decision to raid osama bin laden's compound in pakistan. so morell, it would seem is on the short list to replace petraeus. nsise house officials insist knight, scott, they knew nothing about petraeus' infidelity or this f.b.i. investigation until wednesday, the day after the presidential election. >> pelley: nancy, thanks very wch. we're joined by senior correspondent john miller, who's been talking to his sources on the story. john, why would the f.b.i. be investigating the communications of the director of the c.i.a.